Key parameters at a glance

A radius of 2.34 Earth radii
A mass of 6.08 Earth masses
Surface gravity around 1.11 g
An orbital period of 10.301 days
Semi-major axis 0.0980 AU
Equilibrium temperature 1,015 K (742 °C)
Distance from Earth 6,634.83 light-years
Earth Similarity Index 0.252
Travel time at Voyager 1 speed 117,005,193 years

2 siblings around Kepler-275

Kepler-275 b shares its host star with 2 other confirmed planets. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
Kepler-275 b this	Sub-Neptune	2.34	6.08	10.301	1,015	2014
Kepler-275 c	Sub-Neptune	3.38	11.40	16.088	875	2014
Kepler-275 d	Sub-Neptune	3.33	11.10	35.676	671	2014

Kepler-275 b Planet Profile

Physical Specs

Radius

2.34 R⊕

Radius (Jupiter)

0.209 R♃

Mass

6.08 M⊕

Mass (Jupiter)

0.019 M♃

Density

2.61 g/cm³

Surface Gravity

1.11 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.252

HZ Position Inner

Controversial No

Discovery

Year 2014

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#1429of 1978

top 72.2%

This planet

2.34R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

TOI-283 b 2.34 R⊕ Kepler-338 c 2.34 R⊕ Kepler-246 b 2.34 R⊕

Metric	Earth	Kepler-275 b	Jupiter
Radius (R⊕)	1.00	2.34	11.21
Mass (M⊕)	1.00	6.08	317.83
Density (g/cm³)	5.51	2.61	1.33
Surface Gravity (g)	1.00	1.11	2.53
Insolation (S⊕)	1.00	266.30	0.037

Star Catalogue Identifiers

TIC

TIC 137634395

Gaia DR2

Gaia DR2 2051950454223150720

Gaia DR3

Gaia DR3 2051950454223150720

System

Kepler-275

Percentile among Sub-Neptune cohort

Radius 2.340 R⊕ · percentile 27 / cohort 1978

Mass 6.080 M⊕ · percentile 26 / cohort 1978

Orbital period 10.30 d · percentile 35 / cohort 1946

Distance 2,034.25 pc · percentile 97 / cohort 1975

ESI 0.252 · percentile 16 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

10.301 days

Semi-major axis

0.0980 AU

Eccentricity

0.000

Inclination

89.99 °

Year Length

A year here lasts approximately 10.30 Earth days (2.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0980 AU.

Transit Fingerprint

Depth

0.027 %

Duration

4.967 h

Impact parameter b

0.570

Rp / R★

0.015115

Transit midpoint (BJD)

2,454,975.7400

Photometric dip

Transit produces a flux drop of 272 ppm lasting ≈ 4.97 h.

Extended Orbital Architecture

Planet / star radius ratio

0.015115

Semi-major axis / stellar radius

16.360

Impact parameter (b)

0.570

Transit mid-time (BJD)

2,454,975.7400

Angular separation (arcsec)

0.04820

Eq. Temperature

1,015K

(742 °C)

Insolation (S⊕)

266.30

Earth = 1.00

Earth Similarity (ESI)

0.252

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

Discovery Paper

Primary reference

Rowe et al. 2014

Instrument

Kepler CCD Array

Publication

2014-03

Observation locale

Space

Discovery cohort

Planets confirmed in 2014 at Kepler (12 shown).

Kepler-186 e · Super-Earth Kepler-395 c · Super-Earth Kepler-220 e · Super-Earth Kepler-249 d · Super-Earth Kepler-296 f · Super-Earth Kepler-367 c · Rocky Terrestrial Kepler-296 e · Super-Earth Kepler-155 c · Sub-Neptune Kepler-138 d · Super-Earth Kepler-333 c · Rocky Terrestrial Kepler-331 d · Super-Earth Kepler-267 d · Sub-Neptune

Host System: Kepler-275

Spectral Class

F-type yellow-white

Effective Temperature

6,165 K — hotter than the Sun (5,778 K)

Estimated Age

3.39 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.383 R☉

Stellar Mass

1.189 M☉

Metallicity [Fe/H]

0.08

Extended Stellar Properties

Surface gravity (log g)

4.229 dex

Stellar density

0.470 g/cm³

Metallicity ratio

[Fe/H]

Distance

2,034.25 parsec

Light-years 6,634.83 ly

V-band magnitude

15.29 mag

Voyager-speed travel 117,005,193 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.464 mas

Total Proper Motion

1.637 mas/yr

PM Right Ascension

-0.69 mas/yr

PM Declination

-1.49 mas/yr

Galactic Cartesian (pc)

x = 0.299 · y = -0.723 · z = 0.623

Equatorial (J2000)

RA 292.47970° · Dec 38.51490°

Galactic ℓ, b

71.441° · 9.647°

Ecliptic λ, β

305.743° · 59.196°

HTM-20 index

1165062165